Movie Box Office Prediction Based on IFOA-GRNN

Table 4

Optimal spreading parameters under different parameters.

Population size	Number of iterations	RMSE	Spreading parameter σ
1	50	0.3458	0.0531
5	50	0.3458	0.0531
5	100	0.3458	0.0531
10	100	0.3458	0.0530
20	100	0.3458	0.0530
30	100	0.3458	0.0530
30	150	0.3458	0.0530